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- 'use strict';
- // 标准中间件:错误边界。
- // 路由处理器只需 throw,由这里统一映射为响应:
- // · err.status 优先(处理器可对上游错误标注 502 等)
- // · 智能问数的参数类错误码 → 400
- // · 其余 → 500
- // 响应体形状与拆分前一致:{ error: message, code?: errCode }
- const { sendJson } = require('./util.js');
- const ASK_CLIENT_CODES = new Set(['ASK_NO_MODEL', 'ASK_EMPTY', 'ASK_NO_ENTITY']);
- function errorStatus(e) {
- if (e && e.status) return e.status;
- if (e && ASK_CLIENT_CODES.has(e.code)) return 400;
- return 500;
- }
- function sendError(res, e) {
- if (res.headersSent) {
- // 响应已开始(流式文件等)时只能终止连接,与拆分前 writeHead 抛错的表现一致但不崩进程
- res.destroy();
- return;
- }
- const body = { error: (e && e.message) || String(e) };
- if (e && e.code !== undefined) body.code = e.code;
- sendJson(res, errorStatus(e), body);
- }
- // 包裹异步处理器:同步/异步异常都进入错误边界
- function errorBoundary(handler) {
- return async (c) => {
- try {
- await handler(c);
- } catch (e) {
- sendError(c.res, e);
- }
- };
- }
- // ---------- 访问口令(局域网模式) ----------
- // config.accessToken 非空时启用:/api/* 与 /files 需要口令(cookie / header / query 三选一)。
- // 本机回环访问与健康检查放行;静态页面放行(无登录页,页面先加载,前端 401 后引导输入)。
- function parseCookie(header) {
- const out = {};
- String(header || '').split(';').forEach((part) => {
- const i = part.indexOf('=');
- if (i > 0) {
- try { out[part.slice(0, i).trim()] = decodeURIComponent(part.slice(i + 1).trim()); }
- catch { out[part.slice(0, i).trim()] = part.slice(i + 1).trim(); }
- }
- });
- return out;
- }
- function isLoopbackRemote(req) {
- const addr = String((req.socket && req.socket.remoteAddress) || '');
- return addr === '127.0.0.1' || addr === '::1' || addr === '::ffff:127.0.0.1';
- }
- function makeTokenGuard(config) {
- return function tokenGuard(req, pathname, searchParams) {
- const expected = config.accessToken;
- if (!expected) return true;
- if (pathname === '/healthz' || pathname === '/readyz') return true;
- if (!pathname.startsWith('/api/') && !pathname.startsWith('/files')) return true;
- if (isLoopbackRemote(req)) return true;
- if (searchParams.get('token') === expected) return true;
- if (req.headers['x-access-token'] === expected) return true;
- if (parseCookie(req.headers.cookie).accessToken === expected) return true;
- return false;
- };
- }
- module.exports = { ASK_CLIENT_CODES, errorStatus, sendError, errorBoundary, makeTokenGuard };
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